/* -*- mode: C -*-  */
/* 
   IGraph library.
   Copyright (C) 2006-2012  Gabor Csardi <csardi.gabor@gmail.com>
   334 Harvard st, Cambridge MA, 02139 USA
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc.,  51 Franklin Street, Fifth Floor, Boston, MA 
   02110-1301 USA

*/

#include <igraph.h>

int main () {

  igraph_t g;
  igraph_vs_t vs;
  igraph_vit_t vit;  
  igraph_integer_t size;

  /* empty graph, all vertices */
  igraph_empty(&g, 10, IGRAPH_DIRECTED);
  igraph_vs_nonadj(&vs, 0, IGRAPH_ALL);
  igraph_vs_size(&g, &vs, &size);
  printf("%li ", (long int) size);
  igraph_vit_create(&g, vs, &vit);
  while (!IGRAPH_VIT_END(vit)) {
    printf("%li ", (long int) IGRAPH_VIT_GET(vit));
    IGRAPH_VIT_NEXT(vit);
  }
  printf("\n");
  
  igraph_vit_destroy(&vit);
  igraph_vs_destroy(&vs);
  igraph_destroy(&g);

  /* full graph, no vertices */
  igraph_full(&g, 10, IGRAPH_UNDIRECTED, IGRAPH_LOOPS);
  igraph_vs_nonadj(&vs, 0, IGRAPH_ALL);
  igraph_vit_create(&g, vs, &vit);
  while (!IGRAPH_VIT_END(vit)) {
    printf("%li ", (long int) IGRAPH_VIT_GET(vit));
    IGRAPH_VIT_NEXT(vit);
  }
  printf("\n");
  
  igraph_vit_destroy(&vit);
  igraph_vs_destroy(&vs);
  igraph_destroy(&g);


  return 0;
}
